Bump actions/checkout from 3 to 4

This updates the `test` job to match what was pulled down from
cisagov/skeleton-generic.

Author: mcdonnnj

.github/workflows/build.yml

@@ -148,7 +148,7 @@ jobs:
           - default
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - id: setup-python
         uses: actions/setup-python@v4
         with:

.github/workflows/codeql-analysis.yml

@@ -38,7 +38,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       # Initializes the CodeQL tools for scanning.
       - name: Initialize CodeQL